/** @brief Output'Hello World!' ,end with a line break.
 * @file hello.cpp
 * @author zq
 * @version 2022-14-25
 * @date 2022/11/13
 */

#include <iostream>
int main()
{
  std::cout << "Hello World!" << std::endl; /// Output'Hello World!' ,end with a line break.
  return 0;
}
